product matrix calculator

This matrix calculator allows to calculate online the product of two matrix with calculation step.
matrix_product(`[[3;1;-5];[3;2;1];[4;0;1]];[[3;1;2];[3;4;1];[4;0;1]]`) returns `[[20;5;-12];[25;11;-10];[16;4;-19]]`
See also